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System and method for detecting targets by aid of radar-assisted infrared sensors

A technology of infrared sensors and radar sensors, which is applied in the field of avionics, can solve problems such as tracking problems, target maneuvering, and insufficient attention to the distance dimension, achieving a balance between aircraft stealth and target detection effects, and reducing radiation time.

Active Publication Date: 2014-03-12
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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Problems solved by technology

[0004] In terms of multi-sensor cooperative tracking and radiation control strategies, scholars at home and abroad have carried out a lot of research. Baud et al. proposed a radiation control method based on tracking quality. The tracking quality is judged by the target residual norm. The maneuvering target has strong robustness, but when the tracking diverges, the distance dimension will exceed the threshold earlier than the target residual norm, and the tracking quality method does not pay enough attention to the distance dimension
Cheng Yongmei and others use the singer model to track the target distance, azimuth, and pitch separately in the polar coordinate system, and determine the radar switch through the distance prediction covariance. This method makes full use of the distance channel information, but during the radiation stop period The target is maneuvering, and there will be problems with tracking

Method used

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  • System and method for detecting targets by aid of radar-assisted infrared sensors
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  • System and method for detecting targets by aid of radar-assisted infrared sensors

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Embodiment

[0041] The radar-assisted infrared target detection system of the present invention has a structure such as figure 1 shown. The system mainly includes infrared independent tracking module, infrared / radar cooperative tracking module, radar radiation control module, tracking mode selection and switching module.

[0042] The plane moves in a straight line at a uniform speed from the coordinate origin, the speed is (150, 100, 30) m / s, the target moves in a horizontal circular motion at a constant speed, the coordinates of the center of the circle are (30, 40, 0.6) km, the radius of motion is 5 km, and the angular velocity is 0.08 rad / s. The sampling interval is 50ms, the sampling is 4000 shots, the radar sensor is radar, the infrared sensor is infrared, and the radar and infrared sampling time are synchronized. The performance indicators of radar and infrared data received by the system are shown in Table 1:

[0043]

distance (m)

Radial speed (m / s)

Azimuth...

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Abstract

The invention discloses a system for detecting targets by the aid of radar-assisted infrared rays. The system mainly comprises an infrared independent tracking module, an infrared / radar collaborative tracking module, a radar radiation control module and a tracking mode selecting and switching module. The system has the advantages that radiation on-off strategies are pertinently provided, so that the difficult problem of timely starting and stopping radiation during intermittent radiation can be effectively solved, the radar radiation time can be effectively shortened on the premise that the targets can be assured to be accurately attacked by combat aircrafts, and the invisibility of the aircrafts and a target detection effect can be balanced.

Description

technical field [0001] The invention relates to the field of avionics technology, in particular to a radar-assisted infrared sensor target detection system, which is suitable for a new generation of stealth fighters to use radar / infrared sensor cooperative detection of targets. Background technique [0002] Radar sensors detect targets by means of external radiation energy, but the external radiation makes them face the threat of anti-radiation missiles. Therefore, when combat aircraft fly to the target area, in order to conceal the enemy, the airborne avionics system mainly uses infrared sensors. Reduced use of radar sensors. Infrared sensors can obtain the angle information of the target, but lack the target distance information. In order to supplement the dimension of target information, the radar sensor burst radiation ranging, without destroying the stealth of the aircraft, can realize the precise tracking of the target during the contact stage. [0003] Radar-assiste...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/12G01S13/66
Inventor 赵军
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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